CN2319608Y

CN2319608Y - Centrifugal fan combined self-sucking pump

Info

Publication number: CN2319608Y
Application number: CN 97235322
Authority: CN
Inventors: 张行; 李小凡; 应诗浩
Original assignee: HUIFENG CORROSION RESISTANT PUMP Manufacturing Co SHANGHAI
Current assignee: HUIFENG CORROSION RESISTANT PUMP Manufacturing Co SHANGHAI
Priority date: 1997-08-22
Filing date: 1997-08-22
Publication date: 1999-05-19
Anticipated expiration: 2007-08-22

Abstract

The utility model is composed of a pump body, a water inlet, a water inlet reducing pipe, a water return pipe, a water storage chamber, an impeller, a spiral casing, a water outlet diverging pipe, a water return hole and a water outlet, wherein the water inlet reducing pipe is in a reducing shape; the water inlet is positioned at the opening of the water inlet reducing pipe and has a large caliber. The water return pipe is arranged on the water inlet reducing pipe which is communicated with the water return pipe; the other end of the water return pipe is communicated with the water storage chamber. The water outlet pipe is communicated with the water storage chamber through the water return hole. The utility model can work reliably.

Description

The centrifugal blower combined self-priming pump

The utility model relates to a kind of self-priming pump, especially a kind of centrifugal blower combined self-priming pump belongs to the liquid pump field in the mechanical engineering.

Self-priming pump of the prior art is according to the difference of Under Water Pumps workplace, user's part needs have been satisfied, but self still comes with some shortcomings and defective, as: structure is comparatively complicated, the degree of depth that liquid inserts down in the work is different in size, when especially suction is lower than the following low liquid level medium of pump impeller center line, need join bottom valve, and work is not really reliable; Or, causing floor space bigger again at pump inlet place tipping diversion bucket, structure is compact inadequately.

The purpose of this utility model is to overcome deficiency of the prior art, has proposed a kind of design of centrifugal blower combined self-priming pump of novelty, has structurally improved defective of the prior art.

The technical solution of the utility model is for making intake pipe in the pump housing into convergent shape intake pipe on structural design, the outer bore of intake pipe is big, and interior bore is little, offers return pipe on convergent shape intake pipe; Steam-water separation chamber in the pump housing is designed to straight tubular water chamber; Offer backwater hole on the water outlet diffusion bend pipe in the pump housing, the water inlet reducing pipe in the pump housing communicates with return pipe, and return pipe communicates with straight tubular water chamber, and water outlet diffusion bend pipe communicates with straight tubular person's hydroecium again by backwater hole.After the centrifugal blower combined self-priming pump adds the circulating liquid startup, circulating liquid in the pump sucks the water inlet reducing pipe through return pipe, and further together with gas intake impeller runner together, the carbonated drink mixed solution enters water outlet diffusion bend pipe through the spiral case runner, through backwater hole, further enter straight tubular water chamber again, gas is discharged through water outlet, and liquid is reciprocal through the return pipe repetitive cycling, until gas row light, liquid level rises to impeller inlet, and liquid enters in the pump continuously, pumps mouth of a river continuous effluent.

The utlity model has remarkable result, be lower than low liquid level medium below the pump impeller center line for suction, it is very reliable to work, and has improved former working condition, and the utility model structure is compact.

Below with reference to accompanying drawing the utility model is further described:

Fig. 1 the utility model structural representation

As shown in Figure 1, the utility model mainly comprises the pump housing 1, water intake 2, water inlet reducing pipe 3, return pipe 4, water chamber 5, impeller 6, spiral case 7, water outlet diffusion bend pipe 8, backwater hole 9, water outlet 10, described water inlet reducing pipe 3 is a convergent shape, water intake 2 is positioned at into 3 mouthfuls of water reducing pipes, and bore is bigger, also offers return pipe 4 on water inlet reducing pipe 3, water inlet reducing pipe 3 communicates with return pipe 4, and the other end of return pipe 4 communicates with water chamber 5, and water outlet diffusion bend pipe 8 communicates with water chamber 5 again by backwater hole 9.

Water chamber 5 is designed to straight tubular.

Claims

1, a kind of centrifugal blower combined self-priming pump, by the pump housing 1, water intake 2, water inlet reducing pipe 3, return pipe 4, water chamber 5, impeller 6, spiral case 7, water outlet diffusion bend pipe 8, backwater hole 9, water outlet 10, it is characterized in that described water inlet reducing pipe 3 is convergent shape, water intake 2 is positioned at into 3 mouthfuls of water reducing pipes, bore is bigger, on water inlet reducing pipe 3, also offer return pipe 4, water inlet reducing pipe 3 communicates with return pipe 4, the other end of return pipe 4 communicates with water chamber 5, and Discharging bent-tube 8 communicates with water chamber 5 again by backwater hole 9.

2, this centrifugal blower combined self-priming pump according to claim 1, its feature is that also water chamber 5 is designed to straight tubular.